JPH0158920B2 - - Google Patents
Info
- Publication number
- JPH0158920B2 JPH0158920B2 JP4529682A JP4529682A JPH0158920B2 JP H0158920 B2 JPH0158920 B2 JP H0158920B2 JP 4529682 A JP4529682 A JP 4529682A JP 4529682 A JP4529682 A JP 4529682A JP H0158920 B2 JPH0158920 B2 JP H0158920B2
- Authority
- JP
- Japan
- Prior art keywords
- damper member
- electroacoustic transducer
- living body
- noise
- impedance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 210000000988 bone and bone Anatomy 0.000 claims description 29
- 230000001681 protective effect Effects 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010033675 panniculitis Diseases 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 210000004304 subcutaneous tissue Anatomy 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Telephone Set Structure (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4529682A JPS58162192A (ja) | 1982-03-20 | 1982-03-20 | 振動ピツクアツプ通話装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4529682A JPS58162192A (ja) | 1982-03-20 | 1982-03-20 | 振動ピツクアツプ通話装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58162192A JPS58162192A (ja) | 1983-09-26 |
| JPH0158920B2 true JPH0158920B2 (de) | 1989-12-14 |
Family
ID=12715344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4529682A Granted JPS58162192A (ja) | 1982-03-20 | 1982-03-20 | 振動ピツクアツプ通話装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58162192A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6425289U (de) * | 1987-08-03 | 1989-02-13 | ||
| JPH01272294A (ja) * | 1988-04-22 | 1989-10-31 | Murata Mfg Co Ltd | 骨導マイクロホン |
| JP2006020247A (ja) * | 2004-07-05 | 2006-01-19 | Totsu Denshi Kk | 耐騒音マイク |
| JP6706039B2 (ja) * | 2015-09-04 | 2020-06-03 | パイオニア株式会社 | 生体音聴診装置 |
| CN110949219A (zh) * | 2019-12-27 | 2020-04-03 | 东风汽车集团有限公司 | 一种具有骨传导装置的座椅头枕结构 |
-
1982
- 1982-03-20 JP JP4529682A patent/JPS58162192A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58162192A (ja) | 1983-09-26 |
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